3-D printing has turned prototyping from something that takes days or weeks into something that takes hours. This is great, if the prototype that you end up with does what you want it to do, which it probably won’t, if you’re concerned with interactivity. You can certainly take a dremel to whatever you’ve just printed and try and stuff some sensors into it, but that sounds like a lot of work, which is why researchers at Queen’s University (the one in Ontario) have combined conductive filament with a dual-extruder 3-D printer to create a way to print objects with sensors in them all in one shot.
via IEEE Spectrum
